*** This product has been discontinued and replaced with product code ADP ***
Formulated for Excellent Diesel Engine Protection and Performance. AMSOIL OE Synthetic Diesel Oil provides excellent protection and performance in both on- and off-road diesel engines for the original equipment manufacturer’s recommended drain interval. It meets API CJ-4 specifications and is suitable for both modern and older diesel applications.

Product Description
AMSOIL OE 15W-40 Synthetic Diesel Oil provides excellent protection and performance in both on- and off-road diesel engines for the original equipment manufacturer’s recommended drain interval. It meets API CJ-4 specifications and is suitable for both modern and older diesel applications. AMSOIL OE 15W-40 Synthetic Diesel Oil exceeds the higher performance demands of modern engines and withstands the stress of heat, soot and acids to help prevent deposits, wear and corrosion.

AMSOIL, the leader in automotive synthetic lubrication, produced the world’s first API-qualified synthetic motor oil in 1972. Trust the extensive experience of AMSOIL, The First in Synthetics®, to do the best job protecting your engine.

Meets Emission System Requirements
AMSOIL OE 15W-40 Synthetic Diesel Oil is a low-sulfated ash formulation that meets the requirements for low-emission quality diesel oil and protects under the most severe conditions found in modern diesel engines. It is compatible with all exhaust treatment devices and is designed for engines equipped with diesel particulate filters (DPF).

Resists Oil Consumption and Emissions
Due to its low rate of volatility (burn-off), AMSOIL OE 15W-40 Synthetic Diesel Oil is able to reduce oil consumption and emissions during operation. It maintains its excellent film strength even during high-temperature operating conditions to ensure dependable protection, performance and fuel efficiency.

Aftermarket oil additives are not recommended for use with AMSOIL motor oils.

SERVICE LIFE
AMSOIL OE Synthetic Diesel Oil is recommended for the intervals stated by the original equipment manufacturer (OEM). Refer to the owner’s manual for the specific oil change interval. Replace the oil filter at each oil change as specified by the OEM.

HEALTH & SAFETY
This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS).

I USE AMSOIL IN EVERYTHING!!!!

perfect

I wouldn't use anything else in my diesel pusher motorhome. I travel extensively site seeing and enjoy fewer oil changes due to the quality of this oil.

Item Reviewed: OE Series API CJ-4 Synthetic 15W-40 Diesel Oil (OED)

February 19th, 2017 at 6:10 am

Reviewed by John Wick:

Oil

I like

Item Reviewed: OE Series API CJ-4 Synthetic 15W-40 Diesel Oil (OED)

February 16th, 2017 at 8:36 am

Reviewed by Matt:

Unbeleavable product!

Use Amsoil in my diesel pickup and blown away at its ability to stay clean for more than 6000 miles. As a retired mechanic I'm familiar with oils and engine maintenance. I've never seen such great performance from any oil. I've been sold on Amsoil for a few years now. Recommend to anyone, all the time. Keep up the great work!

Matt

Item Reviewed: OE Series API CJ-4 Synthetic 15W-40 Diesel Oil (OED)

February 13th, 2017 at 10:45 am

Reviewed by None:

Simply the best!!

I have used AMSOIL 15W-40 OE oil for well over 20 years, both in my Chevy HD2500 Duramax and my earlier Dodge RAM 2500 Cummings diesel. It has performed superbly. I recently changed injectors at 200k miles and had my fuel rails adjusted. The mechanic said he couldn't believe how clean the engine internals were and how little wear was exhibited. I think I made a convert that day.

Item Reviewed: OE Series API CJ-4 Synthetic 15W-40 Diesel Oil (OED)

February 8th, 2017 at 12:48 pm

Reviewed by Racer 114:

Great product

I use Amsoil in all my vehicles. Im not easy on my vehicles. I tow, I race, I work hard all the time and expect my vehicles to perform at all times.

Item Reviewed: OE Series API CJ-4 Synthetic 15W-40 Diesel Oil (OED)

February 5th, 2017 at 3:10 am

Reviewed by James:

Buy this oil

The best oil on the Earth

Item Reviewed: OE Series API CJ-4 Synthetic 15W-40 Diesel Oil (OED)

December 26th, 2016 at 10:26 am

Reviewed by Clifford:

Better oil at a better price delivered to the house

Very difficult to find full synthetic 15W-40 for my Chevy Duramax. I find I can get the oil delivered to the house, at a better price, for better oil than I can get locally. Kind of a No-Brainer.

Item Reviewed: OE Series API CJ-4 Synthetic 15W-40 Diesel Oil (OED)

December 18th, 2016 at 2:14 am

Reviewed by DAVE:

great product

Use it on my tired '94 chev 3/4 ton with a 350tbi...keeps the engine clean after running it after a few oil changes..great alternative for something that uses a little oil

Item Reviewed: OE Series API CJ-4 Synthetic 15W-40 Diesel Oil (OED)

December 17th, 2016 at 5:52 am

Reviewed by Ronald:

OE 15-40 Synthetic oil.

Excellent oil, I like and use it.

Item Reviewed: OE Series API CJ-4 Synthetic 15W-40 Diesel Oil (OED)

December 16th, 2016 at 2:10 pm

Reviewed by Pablo:

SHIPPING FEES & PRODUCT

I love to use the amsoil product BUT the only thing the shipping fee is too high

Item Reviewed: OE Series API CJ-4 Synthetic 15W-40 Diesel Oil (OED)

December 8th, 2016 at 10:13 am

Reviewed by Air Force Steve:

GREAT oil but comes with a price

I have used this oil since my truck turned 10,000 miles in 2003--regular oil up to that point. (Back then the recommendation was to wait until the engine breaks in). I am only putting a little over 12,000 miles a year on the truck and change the oil & filter once a year. The truck turns 14 years old next month and is still running great!. I would like to think part of this truck's longevity is due to the AMSOIL in the motor.

Item Reviewed: OE Series API CJ-4 Synthetic 15W-40 Diesel Oil (OED)

August 31st, 2016 at 1:03 pm

Reviewed by K:

OE 15W-40 Synthetic Diesel Oil

Great Product

Item Reviewed: OE Series API CJ-4 Synthetic 15W-40 Diesel Oil (OED)

August 29th, 2016 at 10:31 pm

Reviewed by Stan:

Simply the best

Well, in my experience with the OE 15W-40 diesel oil can't be beat. The very first time I used it about 5 yrs. Ago I had just taken a 900 mile trip got 20.1 miles to the gallon. Switched to Amsoil 15w-40 and did the very same trip got one mile to the gallon better fuel economy. My engine will even start in extreme cold using this oil and never be at a loss for pressure.

Item Reviewed: OE Series API CJ-4 Synthetic 15W-40 Diesel Oil (OED)

August 29th, 2016 at 3:46 pm

Reviewed by Silver dream:

Diesel truck

Tried in my truck to improve fuel mileage and run cooler which it did both

Item Reviewed: OE Series API CJ-4 Synthetic 15W-40 Diesel Oil (OED)

August 29th, 2016 at 1:48 pm

Reviewed by N/A:

I would like to refer, instead, to your marine engine oil

I have used this product for one season and will be using it again for the next season. Mercruiser recommends 25 - 40 oil - the synthetic oil that I am currently using from your line of products is 10 - 40. I realize that you are now marketing a synthetic blend 15 - 40 for marine engines. Given that I prefer the full synthetic oil, when will AMSOIL begin marketing a 25 - 4- full synthetic marine oil

Item Reviewed: OE Series API CJ-4 Synthetic 15W-40 Diesel Oil (OED)

August 29th, 2016 at 12:31 pm

Reviewed by Ed the beach:

Love the oil

I yes all your products in my landscaping equipment and my 2008 dodge ram 3500 with a Cummins

Item Reviewed: OE Series API CJ-4 Synthetic 15W-40 Diesel Oil (OED)

August 29th, 2016 at 12:24 pm

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